<template>
    <div>
       <router-link to="/a">aaaa</router-link>
       <router-link to="/b">bbbb</router-link>
       <router-link to="/c">cccc</router-link>
       <router-link to="/d">dddd</router-link>
       <router-view ></router-view>
    </div>
 </template>
 
 <script>
 export default {
 
 }
 </script>
 
 <style>
  a {
    margin-right: 50px;
  }
 </style>